/url/94b039dd2c0c1b86c0edf3913c7f6a27/2006-03-28T00:37:35Z2006-03-28T00:37:35Ztag:tags.library.upenn.edu,2006-03-28://

2006-03-27T21:48:55Ztag:tags.library.upenn.edu,2006-03-27://

I'm curious why the UPenn Library decided to do its own social bookmarking sytem, and what it's gained from doing so.